Valve.



PATENTED JUNE 25 1907.

J. a DELANY 4 VALVE.

APPLICATION FILED JUNE 28,1906v 8 S S n I uh w Attorneys JAiWIES H. DELANY, 0F WILKINSBURG, PENNSYLVANIA.

VALVE.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed June 23, 1906. Serial No. 323,845-

- time limited, exhaustive or ushing valves,

and has for one of its objects to provide a valve in which the valve member is closed or seated and held to its seat by the pressure of thewater, and may be entirely independent .of either springs or gravity, 8. further object iih this connection being to secure a sealing or closing pressure proportioned to the pressure n the reservoir, tank, or other source of rp y- J,

A further ob ect of the invention is to provide a valve which may be employed either as a single acting or repeating valve, as desired.

A still further object of the invention is to providea valve in which both the opening and closing movements are gradual, thereby .avoiding splashing, detonation or mechanical vantages 0 hammering, and insuring sufficient slack water for sealing the closet.

A still further object of the invention is to provide a valve which will act as a safety valve to relieve excess pressure in case the ressure in the tank or reservoir rises to'the anger oint, and further to provide means for regu ating the pressure required for effecting automatic opening of the valve.

A still further object of the invention is to provide a valve which may be readily operated, and by which the acutating lever or similar member will be quickly restored to its normal position after each operation.

With these and other ObjGOlZS in view, as will more fully hereinafter a pear, the invention consists in certain nove features of construction and arrangement of parts, herein- 7 after. fully describe illustrated inthe accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in'the form, proportions, size and minor details of the structure may be made Without departing from the s irit or sacrificing any of the ad ithe invention.

In the accom anying drawings:Figu;re 1 is a sectional e evation of a flushing valve constructed in accordance with the inven-' tion. Fig. 2 is a plan view of the same. Fig.

3 is a detail sectional view of the valve proper. Fig. 4 is a similar view of the valve piston or plug provided with packing rings. Similar numerals of reference are employed to 7 indicate corresponding throughout the several figures of the ings.

The valve casing 10 is cylindrical in form, and at the top is closedby a screw cap 11. At the bottom of the casing is an intake port 12 which may be coupled by a pipe 13 to a reservoir, tank, or other source of Water supply- Leading from one side of the casing is a discharge port 14 which may communicate through a, pipe 15 with the closet. In the lower portion of the casing is arranged a ta pered rimary valve seat 15, and a tapered second vry valve seat 16, these being separated from each other by an annular groove 17 that is in communication with the escape pgrt 1 4, and the area of said port 14 bears a ed relation to the area of the, port 12, the

areas being. altered in accordance with the' manner in which the valve is to be operated, as will hereinafter ap ear.

Arranged within t e valve casing is a piston valve 20 having a cylindrical head 21 provided with packing rings and provided with two tapered valve portions separated by agroove 22, these valve portions being designed to close against the seats 15 and 16 for the purpose of preventing the passage of waarts ter through the port 12 to the port 14, or

from the upper portion of the casing 10 to said port 14. The piston,valve is provided with a passage or port 25 through which the water may flow from the inlet port 12 to the upper portion of the valve casing, and main-- tain the valve in closed position. The area of the top of the valve is much greater than the area of the bottom, so that the seating pressure is always considerably greater than the pressure tending to open the valve, and said pressure will, of course, be automatically" proportioned to the pressure. of the supply.

The area of the port 25 may be changed by providing the port with internalthreadsand screwing thcreinto the small sleeve 25 sleeves are provided with ports or passages of different area, and are madeinterchanga able, so that the size of the port may be proportioned to the pressure ofwater and other conditions.

At one side of the cylindrical portion of the casing is arranged a passage 26 that communicates at its lower end with a discharge, and

too

The

is allowed to act.

at its upper end may be placed in coninuuiicat1onWv1th the upper portion of the cylindrical casing. through a passage 27 that is arranged to form a tapered seat for a tapered controlling valve This valve is carried by a stem 29 that is pivoted to a main stem 30, arranged to slide through a suitable stuiling box 31 in a plug 32, the latter being mounted in a threaded opening at one side of the casing proper. T he imier end of the plug is recessed for the reception of one end of a helical compression spring 33, the opposite end of which bears against the valve 28 and tends to maintain the same in closed position. The pivotal stein allows free seating of the valve in case of vvear, and the spring serves to hold the two stein members in alinement with each other, so that the valve will always be returned to its seat when the spring The outer end of the stem 20is provided with a head 35 against which bears the shorter curved arm oi an operating lever 37, said lever. ing fulcruined on a pin 38 carried by a bracket 39 that is formed. integral With the casing.

In operation, the valve being in closed position, the ater pressure passing through. the port 25 fdls the chamber above the valve and holds the latter tightly to its two seats 15 and 16, and as the area at the top of the valve is much greater than the ii ea at the bottoin'of the valve said valve will be firmly held in closed position.

The lever operated controlling valve 28 is held firmly closed against the pressure in the cylinder by the compression spring 33, the stress of winch may be varied in accordance with the pressure of the svater.

1 The pressing down of the lever 37 will move the valve 28 to open position, and the escape thus afforded being greater than the .inlet through the port- 25, the pressure at the bottom of the valve will cause the latter to arise to a pointuhere the escape through the outlet port 14 is approximately equal to the volume of water passing through the port 11 If the area of the port 14 is equal to that of the port 1;, the valve will be held above its seats, until the discharge through the port 12 shall have sufficiently subsided through emptying of the pressure tank or other supply to permit the valve to settle of its own Weight. Once this closing movement is startechthe slight increase in pressure resulting will be sufficient to cause the flow through port 25, and valve 28 being at this time closed through release of the lever 37, the pressure exerted on top ofthe valve will accelerate the closing movement as the area of the escape port diminished until the main valve rests on its seat, and is held thereon by the Water pressure. This operation is suit.

able for a single action valve which would remain open independent oi the controlling scenes the port 1-} is sulhcient to hold the valve in raise d position.

To operate the device as a repeating valve, capable of repeating the flushing operation after a predetermined amount of Water has been discharged, it is only necessary to make the discharge port lzl: slightly smaller than the inlet port 12, so that when the valve has opened, there will be an appreciable pressure at the bottom of the valve, \vl'iich would cause a flow or current through the port 25 and result in a gradual forcing down of said valve soon as the controlling valve closed, the time required for said closin being dependent upon the relative areas of po i and channels 12, 1% and 25, thereby causing the cessation of the flushing process after a certain period, independent of the pressure remaining in the tank, reservoir, or other source of supply.

Whether the valve be arranged for singl or multiple flushing, it is apparent that the opening, While prompt, need not be sudden, unless the valve 28 is very large and, si1nilarly, the closing speed will depend principally on the size of the port 25, and Will be inlatively slow, thereby insuring plenty of Water for sealing the closet siphon.

The pressure exerted on valve by the spring 33 is a little more than suliicient to keep the valve tight against WOlliilW pressure, and very little Weight applied to the lever is su'tlicient to operate the valve. Water pressure rise materially above the point at which the closet is supposed to operate, such increase in pressure would overcome the force of the spring and cause the valve to open, thus relieving What would otherwise become dangerous strain on the pressure tank, or reservoir.

The spring 33 is normally counter-balanced by the Water pressure to a )proxi mately ninety percent of its force w on the valve is at rest, and thus is very readily operated by the lever 37, but the instant the main valve is' Wide open, the spring exerts its full pressure oi approximately one hundred per-cent, or ten times the force reuired to push the lever down, thus closing the valve and returning the lever to its normal position and preventing slow release by the operator.

Should the IOO ITO

In Fi 4: is illustrated a sli ht modification of the invention, wherein the valve is provalve so-long as the flow; from the port 12 to l piston valve loosely mounted within the easing and disposed. to simultaneously close against both seats,fsaid valve having an annular groove therein dis osed to register with the'outlet port when t e valve is seated,

said valve having a, port-to permit leakage of water from the inlet to the casing above the piston tolequelize pressure upon opposite aoes'of the piston to close sa-idpiston, there hel a by-pass Within the casing and eX- 1o tend1ng' from the upper portion thereof and opening into the outlet; a valve between said by-pa'ss and the upper portion of the casing, a spring within the, lay-pass for holding said valve normally upon its seat, said valve be- '15-.ing disposed to open into theby-pass when subjected to a; predetermined pressure from Within the upper portion of the casing to permit the escape of the contents of the up per portion of the easing into the outlet,

means for adjusting the tension of said" spring, and manually operated means for adotuating the valve to open communication be 'tween the upper portion of the easing and I JAMES H. DELANY.

Witnesses:

H. J. KILLMEYER, JOHN L. Kmenonn. 

